O/S authenticated local login without password

Create User

CREATE USER "OPS$OPT_DOMAIN\CYBERARKDBA" IDENTIFIED EXTERNALLY AS 'null'    
DEFAULT TABLESPACE "USERS"
TEMPORARY TABLESPACE "TEMP";
GRANT CREATE SESSION TO "OPS$OPT_DOMAIN\CYBERARKDBA";

Now, you can login to oracle without password

sqlplus /

SQL*Plus: Release 12.2.0.1.0 Production on Fri Aug 10 22:55:51 2018

Copyright (c) 1982, 2016, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

SQL> select user from dual;

USER
--------------------------------------------------------------------------------
OPS$OPT_DOMAIN\CYBERARKDBA

Move audit information away from SYSAUX

Check current tablespace location

SELECT table_name, tablespace_name FROM dba_tables
WHERE table_name IN ('AUD$', 'FGA_LOG$') ORDER BY table_name; 

Create tablespace for audit

create tablespace AUDIT_DATA datafile size 1G autoextend on; 

Move to the new AUDIT_DATA tablespace

BEGIN
  DBMS_AUDIT_MGMT.set_audit_trail_location(
  audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD,--this moves table AUD$
  audit_trail_location_value => 'AUDIT_DATA');
  DBMS_AUDIT_MGMT.set_audit_trail_location(
  audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_FGA_STD,--this moves table FGA_LOG$
  audit_trail_location_value => 'AUDIT_DATA');
END;
/

Java Path Location

Windows
C:\ProgramData\Oracle\Java\javapath

Linux

Extract entire database DDL script for SVN

The best program I found is scheme2dll. It can generate ddl script per schema/object type/object name in a tree structure. This is perfect for SVN.

You can download the binary here.

This is the command I use to extract the ddl, schema_export.cmd

@echo off
REM SVN Revision Information: DO NOT REMOVE
REM $Revision: 37 $
REM $Author: chiup $
REM $Date: 2018-06-08 11:56:08 -0400 (Fri, 08 Jun 2018) $
REM
setlocal
java -jar scheme2ddl.jar -url dba_account/xxxxxxxxxx@localhost:1521:paris -p 8 -s ^
ACTUARY_BBS,^
APS,^
B2B,^
BAM,^
BBS,^
BFS,^
CHATS,^
DATAMANAGER,^
DCS,^
DEATH_RECALC,^
DISCOVERER5,^
DSGATEWAY,^
ENROL,^
GENERIC_TRD,^
IP,^
LTIP,^
MAINT,^
MBK,^
OCA,^
ODS,^
OPTFIN,^
OPTIT,^
ORABPEL,^
ORAOCA_PUBLIC,^
PAY,^
PBC,^
PCONV,^
PENWEB,^
PIN,^
PPI,^
PPS_OPSEU,^
PRISM_DBA,^
RMS_OPSEU,^
RULES_TRD,^
SES,^
TRD,^
UDDISYS,^
UNCL,^
WCRSYS,^
XFS,^
XPSPA ^
-o F:\oracle_ddl
endlocal

Installing Oracle XE 11g r2 on Amazon EC2

Add a disk via EC2 console and setup it up in linux

mkfs -t ext4 /dev/xvdb
mkdir /u01

Find out the uuid of the disk

ls -al /dev/disk/by-uuid/

Add the following line to /etc/fstab to mount the disk at boot time

UUID=82497d4a-9507-47db-b19c-c4473827ead6 /u01   ext4    defaults,nofail        0       2

Mount the disk and verify fstab syntax

mount -a

Add Swap space

dd if=/dev/zero of=/swapfile bs=1024 count=3072000
mkswap /swapfile
swapon /swapfile

Add the following line to /etc/fstab to enable swap at boot time

/swapfile swap swap defaults 0 0

Mount the swap and verify fstab syntax

mount -a

Add oracle group and user

groupadd oinstall
groupadd dba
useradd -g oinstall -G dba,oinstall oracle
chown -R oracle:oinstall /u01
passwd oracle

Add the following lines to /etc/security/limits.conf

oracle              soft    nproc   2047
oracle              hard    nproc   16384
oracle              soft    nofile  1024
oracle              hard    nofile  65536
oracle              soft    stack   10240

Install Oracle

yum install glibc make binutils gcc libaio
rpm -i oracle-xe-11.2.0-0.5.x86_64.rpm
/etc/init.d/oracle-xe configure

Add the following lines to ~oracle/.bash_profile

export ORACLE_HOME=/u01/app/oracle/product/11.2.0/xe
export ORACLE_SID=XE

PATH=$PATH:$ORACLE_HOME/bin:$HOME/.local/bin:$HOME/bin
export PATH

RAC database commands

Database level

srvctl stop database -d orcl
srvctl start database -d orcl

PDB level

alter pluggable database PDB1 open  instances=all;
alter pluggable database PDB1 close  instances=all;

SELECT * FROM gv$pdbs;
SELECT * FROM dba_pdb_saved_states;

Oracle 12.2 and Transparent Data Encryption

TDE Setup

Add these lines to sqlnet.ora

ENCRYPTION_WALLET_LOCATION=
(SOURCE=(METHOD=FILE)(METHOD_DATA=
(DIRECTORY=E:\encrypted_wallet\)))

Bounce Database

shutdown immediate;
startup;

Setup auto-login Wallet

ADMINISTER KEY MANAGEMENT CREATE KEYSTORE 'E:\encrypted_wallet\' IDENTIFIED BY "wve6Wq54IUhg39XY";
ADMINISTER KEY MANAGEMENT CREATE AUTO_LOGIN KEYSTORE FROM KEYSTORE 'E:\encrypted_wallet\' IDENTIFIED BY "wve6Wq54IUhg39XY";

Checkout Setting

select * FROM V_$ENCRYPTION_WALLET;
select * FROM V_$ENCRYPTION_KEYS;
SELECT * FROM v$rman_encryption_algorithms ORDER BY algorithm_name;

Create the master key in all containers

ADMINISTER KEY MANAGEMENT SET KEYSTORE OPEN IDENTIFIED BY "wve6Wq54IUhg39XY" CONTAINER=ALL;
ADMINISTER KEY MANAGEMENT SET KEY IDENTIFIED BY "wve6Wq54IUhg39XY" WITH BACKUP CONTAINER=ALL;

Migrate existing tablespaces to encrypted tablespace

Ensure compatibility is 12.2.0

alter system set compatible = '12.2.0' scope=spfile;
show parameter compatible;

Do this for each tablespace. After all tablespaces are migrated to the encrypted one, we need to manual delete the unencrypted datafiles. Oracle supposed to remove them, but they are not doing a good job.

SELECT
    'ALTER TABLESPACE '
    || tablespace_name
    || ' ENCRYPTION ONLINE USING ''AES256'' ENCRYPT;' v_sql
FROM
    dba_tablespaces
WHERE
    encrypted = 'NO'
    AND contents IN (
        'PERMANENT'
    )
    AND tablespace_name NOT IN (
        'SYSTEM',
        'SYSAUX'
    )
ORDER BY
    1;

RMAN Encrypted Backup

RMAN Configuration

CONFIGURE DEVICE TYPE DISK PARALLELISM 2 BACKUP TYPE TO COMPRESSED BACKUPSET;
CONFIGURE ENCRYPTION FOR DATABASE ON;
CONFIGURE ENCRYPTION ALGORITHM 'AES256';

RCV file

show all;
set encryption on;
crosscheck backupset;
crosscheck archivelog all;
delete noprompt expired backupset;
delete noprompt expired archivelog all;
delete noprompt obsolete;
run {  
allocate channel d1 type disk;
allocate channel d2 type disk;
allocate channel d3 type disk;
allocate channel d4 type disk;
BACKUP INCREMENTAL LEVEL 0 DATABASE PLUS ARCHIVELOG;
release channel d1;
release channel d2;
release channel d3;
release channel d4;
}
delete noprompt expired backupset;
delete noprompt expired archivelog all;
delete noprompt obsolete;
list backupset;
exit

Datapump Encrypted Backup

Add these options to expdp

ENCRYPTION=ALL
ENCRYPTION_MODE=TRANSPARENT 
ENCRYPTION_ALGORITHM=AES256

Oracle Database Security Assessment Tool (DBSAT)

The Oracle Database Security Assessment Tool is a stand-alone command line tool that accelerates the assessment and regulatory compliance process by collecting relevant types of configuration information from the database and evaluating the current security state to provide recommendations on how to mitigate the identified risks.

To Run

SET ZIP_CMD=%ORACLE_HOME%\bin\zip.exe 
SET UNZIP_CMD=%ORACLE_HOME%\bin\unzip.exe

dbsat collect chiup@paris12c paris12c

dbsat report paris12c

Oracle RMAN Cold Backup

rman target /

CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE CONTROLFILE AUTOBACKUP ON;
configure controlfile autobackup format for device type disk to 'F:\ora_backup\%F';
configure channel device type disk format 'F:\ora_backup\%U' maxpiecesize 8 G;
run 
{
  shutdown immediate
  startup mount
  backup database;
  alter database open;
}

Check Flashback Recovery Area Size

show parameter db_recovery

NAME                       TYPE        VALUE                  
-------------------------- ----------- ---------------------- 
db_recovery_file_dest      string      F:\flash_recovery_area 
db_recovery_file_dest_size big integer 900G     

show parameter db_flashback

NAME                          TYPE    VALUE 
----------------------------- ------- ----- 
db_flashback_retention_target integer 720 

select space_used/(1024*1024*1024) gb_used, space_limit/(1024*1024*1024) gb_limit from v$recovery_file_dest;

   GB_USED   GB_LIMIT
---------- ----------
427.937144        900

select * from v$flash_recovery_area_usage;

FILE_TYPE               PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES     CON_ID
----------------------- ------------------ ------------------------- --------------- ----------
CONTROL FILE                             0                         0               0          0
REDO LOG                                 0                         0               0          0
ARCHIVED LOG                           .03                       .01              13          0
BACKUP PIECE                         46.85                         0              13          0
IMAGE COPY                               0                         0               0          0
FLASHBACK LOG                          .68                       .65             122          0
FOREIGN ARCHIVED LOG                     0                         0               0          0
AUXILIARY DATAFILE COPY                  0                         0               0          0

8 rows selected. 

Set FRA limit to be 90% of the drive size

alter system set db_recovery_file_dest_size=900G SCOPE=BOTH;

Proxy User and Connect Through

Assuming we have a user called CHIUP and we want to connect to LIB1 without knowing the password, we could do the following.

P.S. This method works for Forms 12c but not Forms 10g.

As DBA

ALTER USER LIB1 GRANT CONNECT THROUGH CHIUP;

Connect via SQL*Plus

CONN CHIUP[LIB1]/xxxxxxx

Connect via SQL Developer
Hit "Advanced..." button in the connection setup window


Revoke Access
As DBA

ALTER USER LIB1 REVOKE CONNECT THROUGH CHIUP;